UX: Topics: Set num of partitions to 1 by default (#334)

Author: LinusRichter

frontend/src/components/Topics/shared/Form/TopicForm.tsx

@@ -116,6 +116,7 @@ const TopicForm: React.FC<Props> = ({
                   id="topicFormNumberOfPartitions"
                   type="number"
                   placeholder="Number of Partitions"
+                  defaultValue="1"
                   min="1"
                   name="partitions"
                   positiveOnly